Question # 1

An object moves 5.0 m north and then 3.0 m south . Find both the distance travelled and the magnitude of the displacement vector.

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2.0 m, 8.0 m

8.0 m, 2.0 m

8.0 m, 8.0 m

2.0 m, 2.0 m

Maximum detail of an object can be seen by a microscope when the object is illuminated by light of.

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Longer wavelegth

Shorter wavelength

X -rays

Gama rays

A germanium atom is

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Monovalent

Diavalent

Travalent

Tetravalent

The ability of eye to focus near as well as distant object is termed as.

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Myopia

Persistence of vision

Power of accommodation

Astigmatism

Change in which parameter determines the work done by a gas during adiabatic prcoess.

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volume

Pressure

Temperature

Weight

In Isochoric process there is no

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Work done

Internal energy change

Volume change or work done

Heat exchanged

Which of the following is mechanical property of a material.

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Strength

Stiffness

Ductility

All of these

When light enters glass from air it suffers a change in.

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Wavelength

Wave front

Velocity

All of these

The input resistance of a JFET is of the order of.

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1 M Mega

10 M Mega

100 M Mega

1,000 M Mega

Which magnetic properties is inherent in all materials.

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Para magnetism

diamagnetism

Ferromagnetism

demagnetism

Tracer techniques make use of.

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Neutron scattering

Electron beams

LASER

Radioactive isotopes

Which of the following configuration of BJTs gives both voltage gain and current gain.

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common Base

Common Emtter

Common collector

All of the above

Which of the following is the most commonly used regions of operations for a transistor.

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Cut off

Saturation

Active

All of these

If a body retains completely its altered shape and size, it is said to be

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Perfecto elasticity

Perfect plasticity

Elasticity

elastic limit

The particles less in mass than protons are

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Measons

Bosons

Baryons

Nucleons

If gravitational field is not uniform over the extended object or system of point masses the centre of mass and centreof gravity will

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Be antiparallel

Not coincide

Coincide

Be perpendicular

The dimensions of universal gravitational constant G are.

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[MLT-2]

[ML -2T-2]

[M-1L2T-2]

[ML-1T-1]

A bodybuilders uses a chest expander with five springs it takes a force of 20 N to Pallone spring out by 15 cm how much force will be needed to extend the expander by 15 cm.

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50 N

75 N

150 N

1000 N

Choose the one which acts as single inverter.

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Common emitter

common collector

Common base

Diode

How are the electrons produced in a cathode ray tube.

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By applying an electric field to the x plates

By heating a metal filament

By ionization of the air

By radioactive decay

The change in entropy for any reversible cycle is identically

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Infinite

Positive

Negative

Zero

The unit of electrochemical potential is.

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J mol-1

volt

J C-1

Mol J-1

What is the emission of light by a substance that has observed light or others electromagnetic radiations of a difference wavelength.

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Fluorescence

Illuminance

Luminance

Incandescence

By decreasing angle between two vectors their cross product.

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Increases

Decreases

Remains the same

Vanishes

The binary equivalent of 25 is

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111001

11001

1001

10101

If the pressure in a closed vessel is reduced by drawing some gas the mean free path of the gas molecules.

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Decreases

Remains constant

Increases

First increases then decreases

The behavior of the gases that can be easily liquefied is like that of the.

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Triatomic gases

Ideal gases

Van der walls gases

Dia atomic gases

If the earth stopped rotating the weight of objects at either pole would.

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Be grater

Be less

Vary with altitude

Be the same before

Hygen's principle states that

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Light travels in straight line

Light travels in electromagetic waves

All points of primary wave front are source of secondary wavelets

Light has dual nature

Absolute zero may be regarded as the temperature of which

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Water freezes

All substances are solids

All gases become liquids

Molecular motioning a gas would ceases

Which of the following SI units is not named after any physicist.

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Hertz

Joule

Volt

Candala

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